The heart is a hollow muscular organ that contracts approx. 100,000 times a day and pumps approx. five liters of blood into the circulation every minute. It is not only characterized by the unique features of muscle tissue specialized to meet the constant physical demands of pumping blood, but also by muscle cells that send spontaneous rhythmic electrical impulses to stimulate contraction. This article gives an overview of the structure of the heart wall and of cardiac muscle tissue.

Our heart is a powerful pump that performs its duty around the clock. It pumps 7,000l of blood through the body each day. This is possible due to, among other things, its autonomous regulation and unique musculature. This article covers the aspects of cardiac physiology that are relevant in medical exams and creates a basic understanding of the mechanics of the heart.

The main task of the lung (Latin: Pulmo) is the oxygenation of the blood and the elimination of carbon dioxide. This gas exchange takes place in the pulmonary alveoli (air sacs). Diseases of the lung are common and seen in every age group. In this context, asthma as a disease of children and teenagers, and the chronic obstructive pulmonary disease (COPD) as a disease of adults should be mentioned. Also, infectious diseases of the lung like pneumonia are part of the everyday-life in practices and hospitals. Anatomic knowledge of the lung is key to be able to classify the different clinical pictures. In the following article, you will get an overview over the location, the structure, and the functions of the lung.

The heart performs the function of receiving and pumping blood. In order to perform this function, it has four compartments, or chambers – the two atria and the two ventricles. The left atrium receives oxygen-rich blood from the pulmonary circulation and drains it into the left ventricle, which then pumps it to the rest of the body. The right atrium receives oxygen-poor blood from the systemic circulation and drains it into the right ventricle, which then sends it to the pulmonary circulation for oxygenation.

Your Educators of course Cardiovascular Gross Anatomy

Craig Canby, PhD

Dr. Craig Canby is Professor of Anatomy at Des Moines University in Iowa. He studied Biology and Chemistry at the Iowa Wesleyan College and later got his Ph.D. in Anatomy at the University of Iowa.
Canby has received many awards and honors for his work including the DPT Class of 2008 Teaching Excellence Award and the Award Hancher Finkbine Medallion.
His research is especially focused on anatomical variations and technology-enabled student learning.

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Lecture is precise. MCQ section is very helpful.

By Nusrat N. on 31. October 2018 for Cardiac Conduction System – Heart (Cor)

I liked the whole Cardiac Conduction System.
Thank you Professor for the lecture. Really helpful and easy to follow.

everything was clear and easy to understand.

By Ragda B. on 16. August 2018 for Thoracic Cavity – Lungs, mediastinum and cardiac valves

I am studying for my Anatomy and physiology class, and your lecture is truly helping me.

i really learned and enjoyed in the same time.

By Ragda B. on 16. August 2018 for Mediastinum – Lungs, mediastinum and cardiac valves

the lecture was amazing, you made it easy and clear to understand

excellent lecture even for an average english speaker. thank you!

By Badr L. on 10. August 2018 for Mediastinal Areas – Lungs, mediastinum and cardiac valves

what a pleasure to learn from the best. thanks to that lecture my concepts are cristal clear.

By sabi y. on 23. January 2018 for Mediastinal Areas – Lungs, mediastinum and cardiac valves

Thank you Dr for the lectures. As an non English IMGs, I can't stop watching it again and again.
Thank you again for talking slowly.

During respiration

By Alexandra J. on 15. October 2017 for In Situ View – Heart (Cor)

I was going to give it a five stars but in the lecture you said during respiration the heart moves down and up but in the quiz the right answer was up and down..

helpful

By Itayi T. on 10. October 2017 for Coronary Circulation – Heart (Cor)

I recommend this for any one in medical school who is looking for high yield information.

Amazing video!

By Neuer N. on 02. September 2017 for Chambers and Great Vessels – Heart (Cor)

I am a thirteen year old girl who wants to become an MD when I grow up, and I've been studying anatomy independently for about half a year, and lecturio helps me so much! This lecture is very in-depth and explanatory, if you want to learn about the heart then you should watch this video!

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